Messaging Gateway is running on a platform with 4 GB RAM. As antispam / antivirus ruleset sizes and software memory requirements increase. SMG can briefly exceed 60% swap utilization on low memory platforms during some operations, especially when running in the Control Center + Scanner "combo box" configuration.
Increase the RAM memory size to over 8GB on the VMware virtual host to match the best practice recommended. Please monitor swap usage. Under normal conditions SMG should only use minimal amount of swap memory or not at all. If the SMG still shows large use of swap memory after increasing RAM memory to 8GB, please increase the memory until this behavior ceases. Memory usage of up to 30GB has been observed. Please ensure that all allocated memory is reserved in ESX.
SMG 8340 Hardware
If you are experiencing this issue on legacy SMG 8340 hardware then your appliance has passed the Symantec hardware warranty date and is End of Support Life. Please contact Symantec Sales to discuss current hardware options or migrate to a sopported virtual infrastructure.
In the short term, please increase the swap alert threshold to 75% via the Administration->Alerts page if running the SMG 8340 in the Control Center + Scanner "combo box" configuration.
Imported Document ID: TECH173928
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